OPTICAL WAVEGUIDE, LENS ARRAY AND LASER CONDENSING DEVICE

Japanese Patent JP3917491

B2

PROBLEM TO BE SOLVED: To provide an optical waveguide, a lens array and a laser condensing device, in which respective laser light beams emitted from a plurality of light emitting parts of a semiconductor laser array are more efficiently condensed and more easily realized.
SOLUTION: The longitudinal dimension of a light emitting face is made smaller than the longitudinal dimension of a light incident faces in the optical wave guide 20, a plurality of laser light beams emitted from a plurality of laser light emitting parts 12 arranged in the longitudinal direction are condensed in the longitudinal direction and emitted from the light emitting faces. Further, first lenses 22 are provided corresponding to respective laser light emitting parts 12 at the light incident face and respective first lenses are formed so that the optical axis of the respective first lenses is inclined substantially to the direction of the light emitting face of the optical wave guide. Further, the distances in the advancing direction of the laser light beams and the distances in the longitudinal directions of the laser light are set at first prescribed values with respect to respective laser light emitting parts for respective first lenses on the basis of the focal distance of the respective first lenses and the angle between the light emitting face and the respective first lenses.

Hiromitsu Ota
Yoshito Kato
Yasuo Shinno
Tomomi Nakano

JP2002251210A

May 23, 2007

August 29, 2002

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JTEKT Corporation

G02B6/42; G02B3/00; G02B6/28; H01S5/02; G02B6/04; (IPC1-7): G02B6/42; G02B3/00; H01S5/02

JP11346028A
JP3011310A
JP2093408A
JP2000098191A
JP2000258669A
JP63115107U

WO2001035149A1

Hidehiko Okada
Tetsuo Fukuda
Tatsuhiko Inukai
Atsuko Nakamura

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